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TsgtE662 · 10-10-2003, 08:44 AM

slpin - you have the same cast numbers as I do. My 402/310 is in my 70 GMC Sierra. As far as I have found the heads are oval port / open chamber type 76cc. I'm not sure how good this is though.

breeh - what book do you have for info on the motors? And is it still in print somewhere?

Thanks

10-10-2003, 08:44 AM	#4
TsgtE662 2A674 Tank Rat Join Date: Jul 2003 Location: Maryland Heights, Mo. Posts: 625	slpin - you have the same cast numbers as I do. My 402/310 is in my 70 GMC Sierra. As far as I have found the heads are oval port / open chamber type 76cc. I'm not sure how good this is though. breeh - what book do you have for info on the motors? And is it still in print somewhere? Thanks __________________ '92 GMC Sierra, Sportside, 2wd, 350, Black '92 Chevy Silverado Extended Cab 4 x 4, Blue USAFR = 2A674 = Aircraft Fuel Systems Maintenance i.e. Tank Rat